Nailing machine



Oct. 21 1924. 1,512,134

A. c. RACETT NAILING MACHINE Filed Oct. 23, 1922 I 3 Sheets-Sheet 1 1NVEN TOR.

A. (fR/ czrz:

mam

A TTORNEY Oct. 21, 1924. 1,512,134

A. C. RACETT NAILING MACHINE Filed Oct. 23 1922 3 Sheets-Sheet 2 wINVENTOR.

A CRACETT.

BMW

ATTORNEY.

NAILING MACHINE Filed 001:. 23 1922 3 Sheets-Sheet 3 INVBVTOR.

4/ A.CRACET7I A TTORNEY.

Patented OctrZl, 1924.

mount 0. can, or naooxmm, new 203:.

narnme macnnm App11oation fled October 28, 1822. Serlal No. 596,406.

To all wlwm it may concern:

Be it known that I, Ancmu. C. Raon'rr, a. citizen of the United States,residm at Brooklyn, in the county of Kings and fate 6 of New York, haveinvented certain new and useful Im rovements in Nailing Machines, ofwhich the. following is a specification.

This invention relates to nailing machines or devices and moreparticularly to a novel and improved automatic nail feeding and drivingmechanism wherein a continuous nail driving operation may be effected.with rapidity and skill and with absolute accuracy as is required in thelaying of parquet floors.

The primary object of my invention is the provision of an automatic nailfeeding mechanism in combination with a driver or piston so arranged asto drive the nail with accuracy and precision including a novel andimproved feed and guide for the nails as the same are lodged in positionto be struck by the piston. 7

Another and equally important object of 86 my invention is theconstruction of an automatic nail feeding and driving device of thecharacter above specified wherein the parts are extremely simple inconstruction, easily assembled, highly efficient in opera- 80 tion anduse, practical, durable, ermittmg of extreme accuracy in par uet oorlaying and otherwise so constructe at a minimum cost whereby itscommercial possibilities are greatly increased.

85 I accom lish the above objects and others which wil become moreapparent as the description proceeds and when taken in connection withthe accompanying drawings, showing a preferred embodiment of myinvention, and wherein:

Figure 1 is a side view of the device.

Figure 2 is a vertical section showing the feed guide and its relationwith the piston.

Fi ure 3 is a similar view to that shown 46 by Figure 2 illustrating thedriving operation.

Figure 4 is a front view, partly in section.

Fi ure 5 is a view taken substantially on the hue 5-5- of Figure 4.

l0 Fi ure 6 is a further section taken substantlally on the line 66 ofFigure 3.

Figure ,7 is a view in cross section of the guide block.

Figures 8 and 9 are details of a self feeder or loader.

Figures 10 and 11 are detailed views of a modified form of nail feederor loader.

Referring now to the drawings wherein like reference charactersdesignate corresponding parts throughout the several views, 5 des gnatesa c linder or casting, preferably of metal, bore internally and ta eringat its lower end 6. A bushing 7 aving a shoulder indicated by numeral 8fits within the bottom of the casting 5, said bushing having a verticalaperture 9 extending therethrough and a bevelled head 10 in the topthereof to direct and guide the nails in cs1- tion just before they arestruck b the diammer m'echam'sm, subsequently to referred to. Thebushing above referred to is referably replaceable and may be various yconstructed to receive different sized nails as may be required. 1

The rear wall llof the casting 5 is provided with a substantiallyrectangular slot 12 through which the nails are guided to the bushingand in position to be engaged by the hammer.

Secured to the rear of the casting 5, I have provided a guideconsisting-of a air of complementary plates 13, 14 provided withvertical flanges 15, 16, secured by bolts 17, 18, or other fasteningelements to the rear undercut portion 19 of the casting 5. As clearlyshownby Figures 1, 2 and 3 of the drawings, the said plates 13, 14extend rearwardly and upwardly at an angle of substantially 60 from thevertical. The plates 13 and14 are also secured to each other by suitablefastening elements 21 and are undercut on their inner faces so as toprovide a chute or guide 22 for the passage of the nails 23 from thefeed tube 24 subsequently to be referred to. The respective plates arealso provided with grooves 25 to receive the heads of the nails whichslide downwardly from the feed tube 24 positioned in the upper end ofthe respective plates as'clearly shown by Figure 1 of the drawings. Thelower endpf the feed tube 24 is provided with a depressed portion cess29 down to the fee 24 which fits into a groove and consequently preventsthe tube from turning and thereby permits of the proper feeding of thenails 23 in the manner su sequently to be referred to. In the rear sideof the casting 5 and above the undercut portion 19, I have rovided atransverse groove or slot 25 1n w ich a feed slide 26 is adapted tooperate, said slide being L-sha d in cross section and provided with a s0t 27 substantially inermediate the ends thereof. The correspondingfront ed es of the plates 14 and 15 are ooved to orm a slot 28 whichregisters with the slot 25 for directing the nails to the feed slide 26.The feed slide 26 is also provided with a cam surface 28 to enga e thenails as the same are fed to the si during the transverse movementthereof, the nails-may fall throu h the vertical reslide or chute 22 andthen into the bushing.

Within the casting or cylinder 5, I have provided a piston or plunger 29having a striking head 30 at the upper end thereof and a spindle at thelower end for engaging the head of the nails into the bushing 7. A coils ring 32 connected to a stud 33 on each of t e plates 13, 14 extendsthrough a pin 35 transversely of the head 30 and normally maintains theplun er in its raised or elevated position. A link or bent bar 36retained bythe springs 3-2 is provided with an aperture 3-7 in the endthereof for connection with the .hooked end 38 of the feed slideoperating lever 39 which extends vertically through an aperture in oneend of the feed slide, the lower bent end 40 of the operating lever, 39beingsecured in a slot in the side of the .castin Since the upper end,of the operating ever is bent outwardly, it will be readily recognizedas the piston descends when the head 30 is struck by the mallet orhammer that a reciprocating motion is imparted to the feed ,slide 26 sothat in each operation a nail will be fed through the vertical slot 29to the chute 22 and 'consequently to the bushing 7 above referred to. Aflat metallic strap 41 is secured in any well known man- 'ner to thecasting just above the tapered lower end thereof, said stra beingprovided with a pair of-inverted t readed bolts 42 or other levelretaining and supporting members having bevelled heads 43 thereon sothat the device maybe gripped by. the hand and slid alongthe floor asnecessity may re uire during the nailing operation. It shou d be notedthat the feed tube 24 is provided with a slot in the bottom thereofthroughout its entire length so that the 'nails may befed properly tothe guide and feed slide at each successive reciprocation or operationof the piston, the said feed tube being preferably held secure inposition by a coil spring 44 connected to the attached plates 13 "and14. While various forms of nail feeding devices or mechanisms may beutilized in connection with my device, a preferred form of feedingmechanism consists of a magazine 45 formed with'a chute 46, said chutehaving a slot' 47in the bottom thereof corresponding with the slot' inthe bottom of the feed tube 241 so that the nails shaken, falldownwardly into the tube 50 so that the heads of the nails are held inthe groove. The upper end of the tube 24 -is provided with a recess 52which fits into the lower end of the tube 50 so that the nails may passdownwardly by gravity and fed in.

the manner above illustrated and described.

While I have illustrated and described my invention with some degree ofparticularity, I realize that in practice various alterations thereinmay be made. I therefore reserve the right and privilege of changing theform of the details of construction or otherwise altering thearrangement of the correlated parts without departing from the spirit ofthe invention or the scope of the appended claims.

Hav'in thus. described my invention,-what I claim as new and desire tosecure by United States Letters Patent is 1. A nailing machineof theclass described comprisifig I a cylinder having a driving elementoperable therein, a grooved guide connected to one face of the cylinder,a feed tube attached to the upper end of the guide for successivelyfeeding nails to the guide and cylinder, resilient members connectingthe upper end of the driving element and the uide, a transverselyoperable feed slide isposed'at the lower end of the guide and on oneface of the cylinder, an operating lever connected to said feed slideand the resilient members, said feed slide having a notch therein topermit the nails to drop successively to the inte- \rior of the cylinderand a nail positioning scribed comprising a cylinder having a drivingelement operable therein, said cylinder having a slot in the rear facethereof communicating with the interior thereof, a grooved guideextendin into the said slot, a feed tube secured in t e upper end of theguide for successively delivering nails there- 'to spring controlledmeans connecting the upper end of the driving element with the guide, atransversely operable feed slide poend of the cylinder for positioningthe 10 sitioned on one face of the cylinder and at nails beneath thelower extremity of the the lower end of the groove of the said drivingelement. t guide, means connecting the feed slide with In testimonwhereof I affix my signature the spring controlled means to-reciprocatein presence 0 two witnesses.

the same upon each operation of the driving ARCHILL G. RACETT. [L. 5.]element, said slide having a notch and a- Witnesses: 1'

cam surface for directing the nails singly 'MABY E. VEEN,

into the cylinder, and a bushing in the lower CHARLES H. VEEN.

